int cg_get_path(const char *controller, const char *path, const char *suffix, char **fs) {
const char *p;
- static __thread bool good = false;
+ static thread_local bool good = false;
assert(fs);
return 0;
}
-int cg_pid_get_path_shifted(pid_t pid, char **root, char **cgroup) {
+int cg_pid_get_path_shifted(pid_t pid, const char *root, char **cgroup) {
_cleanup_free_ char *cg_root = NULL;
char *cg_process, *p;
int r;
- r = cg_get_root_path(&cg_root);
- if (r < 0)
- return r;
+ assert(pid >= 0);
+ assert(cgroup);
+
+ if (!root) {
+ /* If the root was specified let's use that, otherwise
+ * let's determine it from PID 1 */
+
+ r = cg_get_root_path(&cg_root);
+ if (r < 0)
+ return r;
+
+ root = cg_root;
+ }
r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &cg_process);
if (r < 0)
return r;
- p = path_startswith(cg_process, cg_root);
- if (p)
- p--;
- else
- p = cg_process;
+ p = path_startswith(cg_process, root);
+ if (p) {
+ char *c;
- if (cgroup) {
- char* c;
+ c = strdup(p - 1);
+ free(cg_process);
- c = strdup(p);
- if (!c) {
- free(cg_process);
+ if (!c)
return -ENOMEM;
- }
*cgroup = c;
- }
-
- if (root) {
- cg_process[p-cg_process] = 0;
- *root = cg_process;
} else
- free(cg_process);
+ *cgroup = cg_process;
return 0;
}
int cg_path_get_owner_uid(const char *path, uid_t *uid) {
_cleanup_free_ char *slice = NULL;
- const char *e;
+ const char *start, *end;
char *s;
+ uid_t u;
int r;
assert(path);
- assert(uid);
r = cg_path_get_slice(path, &slice);
if (r < 0)
return r;
- e = startswith(slice, "user-");
- if (!e)
+ start = startswith(slice, "user-");
+ if (!start)
return -ENOENT;
- if (!endswith(slice, ".slice"))
+ end = endswith(slice, ".slice");
+ if (!end)
return -ENOENT;
- s = strndupa(e, strlen(e) - 6);
+ s = strndupa(start, end - start);
if (!s)
- return -ENOMEM;
+ return -ENOENT;
+
+ if (parse_uid(s, &u) < 0)
+ return -EIO;
- return parse_uid(s, uid);
+ if (uid)
+ *uid = u;
+
+ return 0;
}
int cg_pid_get_owner_uid(pid_t pid, uid_t *uid) {
_cleanup_free_ char *cgroup = NULL;
int r;
- assert(uid);
-
r = cg_pid_get_path_shifted(pid, NULL, &cgroup);
if (r < 0)
return r;